Inorganic Polyionic Cluster Antiperspirant Composition
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Solution Overview
Problem
Conventional antiperspirant actives, such as aluminum and zirconium salts, have limitations in safety and efficacy, necessitating the development of alternative active ingredients that can effectively reduce perspiration without adverse effects.
Innovation Solution
Inorganic polyionic clusters, specifically calcium or magnesium-based clusters with a particular structure, are used in an anhydrous composition that forms precipitations or aggregations upon contact with sweat or solvent evaporation, blocking sweat ducts to inhibit perspiration, potentially replacing or complementing traditional actives.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional antiperspirant actives (aluminum and zirconium salts) are used, then perspiration reduction is achieved, but safety and efficacy limitations arise
Solution Approach 1:
The patent changes the chemical composition parameters by replacing conventional aluminum and zirconium salts with inorganic polyionic clusters containing calcium and magnesium ions. This parameter change maintains the antiperspirant function while improving safety profile and eliminating adverse effects associated with conventional actives.
Solution Approach 2:
The patent employs composite inorganic polyionic cluster structures that combine multiple ions (calcium, magnesium, phosphate, carbonate) in a specific arrangement. This composite approach creates a new class of antiperspirant actives that differ fundamentally from conventional single-metal salts, achieving both efficacy and safety improvements.
2Reliability
If inorganic polyionic clusters are used, then safer alternative is provided, but stability in aqueous media is compromised
Solution Approach 1:
The patent formulates the inorganic polyionic clusters in an anhydrous (water-free) composition that creates a stable inert environment for the clusters. This prevents degradation of the clusters in aqueous media while maintaining their antiperspirant activity. The anhydrous formulation acts as a protective medium that preserves cluster integrity until application.
Solution Approach 2:
The patent uses an anhydrous carrier system as an intermediary medium that protects the inorganic polyionic clusters from aqueous degradation. This intermediary formulation allows the clusters to remain stable during storage and application, then activates their function upon contact with sweat or water in the body.
3Adaptability or versatility
If inorganic polyionic clusters are used, then alternative active is provided, but precipitation/aggregation behavior must be controlled
Solution Approach 1:
The patent controls precipitation and aggregation by carefully adjusting formulation parameters including pH, ion concentration ratios, and carrier composition. These parameter changes enable the inorganic polyionic clusters to remain stable in the anhydrous formulation while allowing controlled precipitation/aggregation to occur specifically when contacted by sweat or water, achieving the desired antiperspirant effect.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The anhydrous antiperspirant composition effectively reduces perspiration by forming non-permanent blockages in sweat ducts, offering a safer and potentially more effective alternative to conventional antiperspirant actives, while maintaining stability and cosmetic acceptability.
Implementation Method 1
particles of the clusters are capable of forming a precipitation/aggregation when they contact with sweat/perspiration or after solvents in the carrier evaporate
Implementation Method 2
after solvents in the carrier evaporate
Data Source
AI summary
The present invention is in the field of antiperspirant compositions, in particular, compositions comprising antiperspirant actives. Disclosed is an anhydrous antiperspirant composition comprising an inorganic polyionic cluster having structure of (I) or (II); where M is Ca or Mg; and wherein the composition is substantially free of abrasives, which means less than 3.0% by weight of the composition; wherein anhydrous means the water content of the composition is less than 3.0%.